[chore] The Big Middleware and API Refactor (tm) (#1250)

* interim commit: start refactoring middlewares into package under router

* another interim commit, this is becoming a big job

* another fucking massive interim commit

* refactor bookmarks to new style

* ambassador, wiz zeze commits you are spoiling uz

* she compiles, we're getting there

* we're just normal men; we're just innocent men

* apiutil

* whoopsie

* i'm glad noone reads commit msgs haha :blob_sweat:

* use that weirdo go-bytesize library for maxMultipartMemory

* fix media module paths

1 files changed, 215 insertions, 0 deletions

diff --git a/internal/api/auth/token_test.go b/internal/api/auth/token_test.go
new file mode 100644
index 000000000..50bbd6918
--- /dev/null
+++ b/internal/api/auth/token_test.go
@@ -0,0 +1,215 @@
+/*
+   GoToSocial
+   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package auth_test
+
+import (
+	"context"
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/suite"
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/testrig"
+)
+
+type TokenTestSuite struct {
+	AuthStandardTestSuite
+}
+
+func (suite *TokenTestSuite) TestPOSTTokenEmptyForm() {
+	ctx, recorder := suite.newContext(http.MethodPost, "oauth/token", []byte{}, "")
+	ctx.Request.Header.Set("accept", "application/json")
+
+	suite.authModule.TokenPOSTHandler(ctx)
+
+	suite.Equal(http.StatusBadRequest, recorder.Code)
+
+	result := recorder.Result()
+	defer result.Body.Close()
+
+	b, err := ioutil.ReadAll(result.Body)
+	suite.NoError(err)
+
+	suite.Equal(`{"error":"invalid_request","error_description":"Bad Request: grant_type was not set in the token request form, but must be set to authorization_code or client_credentials: client_id was not set in the token request form: client_secret was not set in the token request form: redirect_uri was not set in the token request form"}`, string(b))
+}
+
+func (suite *TokenTestSuite) TestRetrieveClientCredentialsOK() {
+	testClient := suite.testClients["local_account_1"]
+
+	requestBody, w, err := testrig.CreateMultipartFormData(
+		"", "",
+		map[string]string{
+			"grant_type":    "client_credentials",
+			"client_id":     testClient.ID,
+			"client_secret": testClient.Secret,
+			"redirect_uri":  "http://localhost:8080",
+		})
+	if err != nil {
+		panic(err)
+	}
+	bodyBytes := requestBody.Bytes()
+
+	ctx, recorder := suite.newContext(http.MethodPost, "oauth/token", bodyBytes, w.FormDataContentType())
+	ctx.Request.Header.Set("accept", "application/json")
+
+	suite.authModule.TokenPOSTHandler(ctx)
+
+	suite.Equal(http.StatusOK, recorder.Code)
+
+	result := recorder.Result()
+	defer result.Body.Close()
+
+	b, err := ioutil.ReadAll(result.Body)
+	suite.NoError(err)
+
+	t := &apimodel.Token{}
+	err = json.Unmarshal(b, t)
+	suite.NoError(err)
+
+	suite.Equal("Bearer", t.TokenType)
+	suite.NotEmpty(t.AccessToken)
+	suite.NotEmpty(t.CreatedAt)
+	suite.WithinDuration(time.Now(), time.Unix(t.CreatedAt, 0), 1*time.Minute)
+
+	// there should be a token in the database now too
+	dbToken := &gtsmodel.Token{}
+	err = suite.db.GetWhere(context.Background(), []db.Where{{Key: "access", Value: t.AccessToken}}, dbToken)
+	suite.NoError(err)
+	suite.NotNil(dbToken)
+}
+
+func (suite *TokenTestSuite) TestRetrieveAuthorizationCodeOK() {
+	testClient := suite.testClients["local_account_1"]
+	testUserAuthorizationToken := suite.testTokens["local_account_1_user_authorization_token"]
+
+	requestBody, w, err := testrig.CreateMultipartFormData(
+		"", "",
+		map[string]string{
+			"grant_type":    "authorization_code",
+			"client_id":     testClient.ID,
+			"client_secret": testClient.Secret,
+			"redirect_uri":  "http://localhost:8080",
+			"code":          testUserAuthorizationToken.Code,
+		})
+	if err != nil {
+		panic(err)
+	}
+	bodyBytes := requestBody.Bytes()
+
+	ctx, recorder := suite.newContext(http.MethodPost, "oauth/token", bodyBytes, w.FormDataContentType())
+	ctx.Request.Header.Set("accept", "application/json")
+
+	suite.authModule.TokenPOSTHandler(ctx)
+
+	suite.Equal(http.StatusOK, recorder.Code)
+
+	result := recorder.Result()
+	defer result.Body.Close()
+
+	b, err := ioutil.ReadAll(result.Body)
+	suite.NoError(err)
+
+	t := &apimodel.Token{}
+	err = json.Unmarshal(b, t)
+	suite.NoError(err)
+
+	suite.Equal("Bearer", t.TokenType)
+	suite.NotEmpty(t.AccessToken)
+	suite.NotEmpty(t.CreatedAt)
+	suite.WithinDuration(time.Now(), time.Unix(t.CreatedAt, 0), 1*time.Minute)
+
+	dbToken := &gtsmodel.Token{}
+	err = suite.db.GetWhere(context.Background(), []db.Where{{Key: "access", Value: t.AccessToken}}, dbToken)
+	suite.NoError(err)
+	suite.NotNil(dbToken)
+}
+
+func (suite *TokenTestSuite) TestRetrieveAuthorizationCodeNoCode() {
+	testClient := suite.testClients["local_account_1"]
+
+	requestBody, w, err := testrig.CreateMultipartFormData(
+		"", "",
+		map[string]string{
+			"grant_type":    "authorization_code",
+			"client_id":     testClient.ID,
+			"client_secret": testClient.Secret,
+			"redirect_uri":  "http://localhost:8080",
+		})
+	if err != nil {
+		panic(err)
+	}
+	bodyBytes := requestBody.Bytes()
+
+	ctx, recorder := suite.newContext(http.MethodPost, "oauth/token", bodyBytes, w.FormDataContentType())
+	ctx.Request.Header.Set("accept", "application/json")
+
+	suite.authModule.TokenPOSTHandler(ctx)
+
+	suite.Equal(http.StatusBadRequest, recorder.Code)
+
+	result := recorder.Result()
+	defer result.Body.Close()
+
+	b, err := ioutil.ReadAll(result.Body)
+	suite.NoError(err)
+
+	suite.Equal(`{"error":"invalid_request","error_description":"Bad Request: code was not set in the token request form, but must be set since grant_type is authorization_code"}`, string(b))
+}
+
+func (suite *TokenTestSuite) TestRetrieveAuthorizationCodeWrongGrantType() {
+	testClient := suite.testClients["local_account_1"]
+
+	requestBody, w, err := testrig.CreateMultipartFormData(
+		"", "",
+		map[string]string{
+			"grant_type":    "client_credentials",
+			"client_id":     testClient.ID,
+			"client_secret": testClient.Secret,
+			"redirect_uri":  "http://localhost:8080",
+			"code":          "peepeepoopoo",
+		})
+	if err != nil {
+		panic(err)
+	}
+	bodyBytes := requestBody.Bytes()
+
+	ctx, recorder := suite.newContext(http.MethodPost, "oauth/token", bodyBytes, w.FormDataContentType())
+	ctx.Request.Header.Set("accept", "application/json")
+
+	suite.authModule.TokenPOSTHandler(ctx)
+
+	suite.Equal(http.StatusBadRequest, recorder.Code)
+
+	result := recorder.Result()
+	defer result.Body.Close()
+
+	b, err := ioutil.ReadAll(result.Body)
+	suite.NoError(err)
+
+	suite.Equal(`{"error":"invalid_request","error_description":"Bad Request: a code was provided in the token request form, but grant_type was not set to authorization_code"}`, string(b))
+}
+
+func TestTokenTestSuite(t *testing.T) {
+	suite.Run(t, &TokenTestSuite{})
+}